How many passes 'til your drag radials start to go away?
#3225034
04/04/24 02:21 PM
04/04/24 02:21 PM
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Joined: Dec 2021
Posts: 1,126 Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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I'm just full of questions today
My ET Street S/S are a couple years old and coming up on 50 passes. Seems to me like they're starting to slow down in the 60 by a few hundredths... from maybe 1.68-1.70 to 1.74-1.76, even though they're still showing "legal" tread depth left for street use. Does this sound about right to others who drive on the same tires to the track as they race on? I suppose this could be the effect of repeated heat cycling from street & track usage.
Also, anyone have direct 60 ft / ET comparisons between ET Street S/S and ET Street R of comparable sizes? My S/S are 305/40R18 (28" tall), but I have a set of ET Street R 305/45R18 (29" tall, probably a tad lighter) on hand, too. Wondering if I should expect they'll perform the same, or if the "R" might be a tad quicker. Thx
Last edited by Brad_Haak; 04/04/24 02:32 PM.
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: How many passes 'til your drag radials start to go away?
[Re: Brad_Haak]
#3225063
04/04/24 04:45 PM
04/04/24 04:45 PM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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I usually get around 50 passes out of my 295-65 ET Street radials.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: How many passes 'til your drag radials start to go away?
[Re: fbs63]
#3225196
04/05/24 11:09 AM
04/05/24 11:09 AM
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Joined: Jan 2003
Posts: 8,026 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,026
Tulsa OK
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I think my 275 pros are good for around 100 passes depending on how much I street drive them. They never seem to fade as far as ET goes but they run out of grooves.
68 Barracuda Formula S 340
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Re: How many passes 'til your drag radials start to go away?
[Re: Bad340fish]
#3225217
04/05/24 12:28 PM
04/05/24 12:28 PM
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Joined: Jan 2004
Posts: 4,566 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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Drag Radials only need enough heat to start smoking. Anything more is just wasting tire. We have run them until cords are about showing. Or, until they look like slicks any way. Still almost work just as good as new.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: How many passes 'til your drag radials start to go away?
[Re: 6PKRTSE]
#3225231
04/05/24 01:30 PM
04/05/24 01:30 PM
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Joined: May 2012
Posts: 1,821 South Bend
John Brown
top fuel
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top fuel
Joined: May 2012
Posts: 1,821
South Bend
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Does anybody swap tires side to side anymore when they quit biteing? We sure used to.
July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
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Re: How many passes 'til your drag radials start to go away?
[Re: John Brown]
#3225240
04/05/24 02:13 PM
04/05/24 02:13 PM
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Joined: Jan 2003
Posts: 2,917 A shed in England
Tig
master
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master
Joined: Jan 2003
Posts: 2,917
A shed in England
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Does anybody swap tires side to side anymore when they quit biteing? We sure used to. Most radial race tyres are directional, at least the ones I've used are. With the Radial Slicks we use I can go past the wear-markers after about 50 passes, they still work just as well. OH, and I don't do a big burnout either.
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials. 9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge. RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: How many passes 'til your drag radials start to go away?
[Re: Tig]
#3225246
04/05/24 02:45 PM
04/05/24 02:45 PM
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Joined: Dec 2021
Posts: 1,126 Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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I may be putting too much heat into them... but I also know what's happened when I've messed up and not put enough
FWIW, I estimated I've got about 1K of street-driven miles on these tires, mostly going to and from the tracks.
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: How many passes 'til your drag radials start to go away?
[Re: Brad_Haak]
#3225272
04/05/24 05:58 PM
04/05/24 05:58 PM
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Joined: Dec 2013
Posts: 4,672 Wichita
GY3
master
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master
Joined: Dec 2013
Posts: 4,672
Wichita
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Mine take a very short burnout to get sticky.
I've ran 1.36 60 ft. just before the two grooves were gone on a set of 275 ET Street Pros.
Lots of passes and extended life if you treat them right. I'm on my 3rd pair in 10 seasons.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: How many passes 'til your drag radials start to go away?
[Re: GY3]
#3225307
04/05/24 09:47 PM
04/05/24 09:47 PM
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Joined: Jan 2004
Posts: 4,566 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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Just driving on the street while my brother was following me in another one of my cars, I switched lanes to get over and my drag radial peeled the white line right off the road. When he told me when we arrived at the cruise night, I checked my rear tire and portions of the white line was still stuck to the tire. They get sticky even without a burnout.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: How many passes 'til your drag radials start to go away?
[Re: fbs63]
#3225390
04/06/24 11:13 AM
04/06/24 11:13 AM
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Joined: Dec 2021
Posts: 1,126 Loudoun County, VA
Brad_Haak
OP
super stock
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OP
super stock
Joined: Dec 2021
Posts: 1,126
Loudoun County, VA
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I know MT recomends the ET Street SS for more street than track. Vice versa with the ET Street R. The R tire uses the same compound as the Pro Bracket Radial so it is better for marginal prep. That's why I bought Rs to replace the S/S since I swap 'em out for normal street use anyway. I didn't realize my S/S had that much tread left (at least 3/32) until I pulled 'em off the last time, so I'd rather get my money's worth if they're not losing grip. I'll see if shorter burnouts make any difference, too.
2021 Challenger 6.4L Scat Pack 1320 100% stock: 1.680, 11.894 at 113.75 (DA 175 ft) weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008] pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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